CA1221769A - Circuit for selecting and locking in operation function circuitry - Google Patents

Circuit for selecting and locking in operation function circuitry

Info

Publication number
CA1221769A
CA1221769A CA000467835A CA467835A CA1221769A CA 1221769 A CA1221769 A CA 1221769A CA 000467835 A CA000467835 A CA 000467835A CA 467835 A CA467835 A CA 467835A CA 1221769 A CA1221769 A CA 1221769A
Authority
CA
Canada
Prior art keywords
signals
circuit
keyboard
operational function
main computer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000467835A
Other languages
English (en)
French (fr)
Inventor
Morgan E. Robinson
David B. Hughes
Thomas C. Porcher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digital Equipment Corp
Original Assignee
Digital Equipment Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digital Equipment Corp filed Critical Digital Equipment Corp
Application granted granted Critical
Publication of CA1221769A publication Critical patent/CA1221769A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G06F3/021—Arrangements integrating additional peripherals in a keyboard, e.g. card or barcode reader, optical scanner

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Digital Computer Display Output (AREA)
CA000467835A 1983-11-14 1984-11-14 Circuit for selecting and locking in operation function circuitry Expired CA1221769A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/551,009 US4667307A (en) 1983-11-14 1983-11-14 Circuit for selecting and locking in operation function circuitry
US551,009 1983-11-14

Publications (1)

Publication Number Publication Date
CA1221769A true CA1221769A (en) 1987-05-12

Family

ID=24199451

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000467835A Expired CA1221769A (en) 1983-11-14 1984-11-14 Circuit for selecting and locking in operation function circuitry

Country Status (14)

Country Link
US (1) US4667307A (da)
EP (1) EP0143045B1 (da)
JP (1) JPS60117319A (da)
KR (1) KR900004004B1 (da)
AU (1) AU579330B2 (da)
BR (1) BR8405798A (da)
CA (1) CA1221769A (da)
DE (1) DE3483416D1 (da)
DK (1) DK165029C (da)
FI (1) FI86230C (da)
GR (1) GR80896B (da)
IE (1) IE56793B1 (da)
MX (1) MX157104A (da)
ZA (1) ZA848813B (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188457B (en) * 1986-03-25 1989-11-15 C & P Technology Limited Control keyboard for a multiple system accessing unit
WO1988003287A1 (en) * 1986-10-24 1988-05-05 Harcom Security Systems Corporation Computer security system
US4951249A (en) * 1986-10-24 1990-08-21 Harcom Security Systems Corp. Method and apparatus for controlled access to a computer system
US4993931A (en) * 1988-07-21 1991-02-19 Sabel Plastechs, Inc. Apparatus for making a hollow polyethylene terephthalate blow molded article with an integral external projection such as a handle
US5642805A (en) * 1995-10-12 1997-07-01 Tefft; Brian Input device lock

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293612A (en) * 1963-03-28 1966-12-20 Rca Corp Data processing
US3353160A (en) * 1965-06-09 1967-11-14 Ibm Tree priority circuit
US3530440A (en) * 1968-08-26 1970-09-22 Hewlett Packard Co Data processing system including controllable means for directly interconnecting the input and output units
US3742466A (en) * 1971-11-24 1973-06-26 Honeywell Inf Systems Memory system for receiving and transmitting information over a plurality of communication lines
US3725877A (en) * 1972-04-27 1973-04-03 Gen Motors Corp Self contained memory keyboard
US3860808A (en) * 1972-05-09 1975-01-14 Sony Corp Electronic computer system
US3973244A (en) * 1975-02-27 1976-08-03 Zentec Corporation Microcomputer terminal system
US4137564A (en) * 1977-08-22 1979-01-30 Burroughs Corporation Intelligent computer display terminal having EAROM memory
US4255786A (en) * 1979-01-02 1981-03-10 Honeywell Information Systems Inc. Multi-way vectored interrupt capability
JPS55166731A (en) * 1979-06-13 1980-12-26 Canon Inc Data protection system
US4314164A (en) * 1979-11-05 1982-02-02 Gte Automatic Electric Labs Inc. Computer channel access circuit for multiple input-output devices
US4403303A (en) * 1981-05-15 1983-09-06 Beehive International Terminal configuration manager

Also Published As

Publication number Publication date
FI86230B (fi) 1992-04-15
ZA848813B (en) 1985-07-31
FI844448L (fi) 1985-05-15
FI844448A0 (fi) 1984-11-13
KR850004669A (ko) 1985-07-25
AU579330B2 (en) 1988-11-24
DE3483416D1 (de) 1990-11-22
KR900004004B1 (ko) 1990-06-07
DK165029B (da) 1992-09-28
EP0143045B1 (en) 1990-10-17
DK541084A (da) 1985-05-15
US4667307A (en) 1987-05-19
EP0143045A3 (en) 1987-08-12
EP0143045A2 (en) 1985-05-29
IE842915L (en) 1985-05-14
JPH0434787B2 (da) 1992-06-09
DK541084D0 (da) 1984-11-14
BR8405798A (pt) 1985-09-17
AU3539184A (en) 1985-06-20
JPS60117319A (ja) 1985-06-24
IE56793B1 (en) 1991-12-18
GR80896B (en) 1985-01-25
DK165029C (da) 1993-02-08
FI86230C (fi) 1992-07-27
MX157104A (es) 1988-10-27

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